Oil heating device



March 6, 1934. H. w. HlLDEBRAND. JR., ET'AL l 1,949,471

oIL HEATING DEVICE Filed March 1o, 1931 2 sheets-sheet 1 W M? w M. .Www www March e, 1934.

H. .w. HILDEBRAND, J., ET AL OIL HEATING DEVICE Filed March 10, I931 v2 Sheets-Sheet 2 45 tightness thereof.

A further object of the invention is to so con Patented Mar. 6, 1934 Henry w. Hildebrand, Jr., and Herold w.

Denver, Colo., assignors to Oil Service &

ritley, Engineering Company, Denver, Colo., a corporation of Delaware Application March 10, 1931, Serial N0. 521,498 A 1v Claim.

This invention relates to a portable oil heating device. The device has a great many uses a few of which might be mentioned as follows:

A(1) Heating a large volume of oil so that this 6 hot oil can be dumped down a well casing to melt and dissolve the parailins and otherheavy oils from the 'casing and adjacent sands so as to clean l and increase the flow of the Welland reduce the viscosity of the crude oil therein. When employed for this purpose the device could be used in closed circuit with the well, that is. oil from the well could be returned to the device where it would be heated and returned to the well until the Well had reached the desired temperature.

(2) Preparing a. volume of hot/.oil for passage through an oil pipe line for dissolving and cleaning the parailins and other thickened accumulations from the walls of the pipe.

(3) Heating used crank case oils collected from garages, lling stations, etc., lfor reclaiming pur- (4) Heating crude oil at the well so that vari- ,ous fractionations could be obtained directly so as to obviate a trip to the rennery.

Many other uses canbe found for the device, many of which will become more apparent from the following detailed description. It is desiredl to be understood that all such uses are contemplated in the conception of the present invention.` The principal object of the invention is to provide a device of this character which willbe read-A ily portable and which can be eiliciently employed to heat relatively large quantities of oil to excessively high temperatures.

Another object of the invention is to combine with the heating portion of the device'one or more portable storage reservoirs, the foil in which can be heated from the device, and which can be used to store hot oil should alargevolume be required 40. for-oil well cleaning p stm another object of the invention is to so' construct the device that val1 expansion and co'ntraction strains due to temperature changes, will be absorbed so as to not effect the gas and liquid struct the devicethat a portion ofthe oil being heated can be used to furnish the fuel` for the heating.

vide a highly emcient heating unit which willenable a maximum absorption of heat to be obtained from the fuel. Other objects and advantages reside in the de- 66., tail construction of the invention which is de- 4supported from the oor of the tank 12 in bracket through a stack-sleeve15. The stacks 14 are A stili :luther object of the invention is to prn-` (Cl. 12S-343.5)

signed -for simplicity, economy, and eiiiciency. 1' 'Ihese will become moreapparent from the following description. t

In the following detailed description of theinvention reference is had to the accompanying drawings which form a part hereof. Like numerals freier to like parts in all views of the drawings and throughout the description.

In the drawings:

Fig. 1is aside elevation of a preferred form I5 ,of the oil heating device.

Fig. 2 is a vertical section therethrough taken on the line 2 2, Fig. 1.

Fig. 3 is a rear end elevation of the tank portion of the device. 70

Fig. 4 is a detail vertical section of the heater taken on the line 4-41, Fig. 3. A Fig. 5 also illustrates a section through the name housing, taken on the line 5 5, Fig. 4. Fig.l 6 is a fragmentary lett side elevation of the rearward extremity of the device.

Figs. 2 to 6, inclusive, are drawn to a slightly larger scale than Fig. 1. A typical automobile truck chassis is indicated at 10 with its rear wheels at V11.

The invention comprises a tank 12 of a convenient size to be carried'upon the chassis 10. The tank 12 may have any desired shape. It is preferred, however, for structural and efficiency reasons to construct it with a fiat bottom and a semi-cylindrical top as illustrated in Fig. 2. One or more (two being illustrated) nre tubes 13 extend within the tank through the rear liead parallel with and adjacent to the bottom thereof. The

The nre tubes 13 are carried in slide rings 17 plates 1.8. The bracket plates absorb the lateral strains of the tubes I13 but leave the tubes free to expand longitudinally. f v v YA vertical stack 14 extends upwardly from the forward extremity of each Atube and projects welded or otherwise secured in annular heads 16 in. the sleeves15. By carrying the stacks 14 up to a. connectionat the top of the sleeves 15 a relatively long length ofstack is provided which can bend with the expansion of the tubes 13 without imparting disastrous strains. Another reason for using the sleeves 15. is to provide a. greater area for absorption o f the heat from the gas exhausting through the stack.

Thetop of the tank' 12 is provided with a domeA 11 f means of a suitable 44 isalso driven from the blower shaft42 by means "oloilinthetank a cap 32, is provided' in each o'f the to allow the operator to view his iiame when A "'l` intakes from the 19 covered by means of a removable cap 29 which provides a manhole for cleaning and repairing the interior of the tank. i The cap 20 carries a vapor valve 21, a. filling valve 22, a safety valve 123. and a pressure gauge 24. A thermometer tube is provided' at 25. The tank 12 is also provided with an upper valve 49, a lower valve 50 and a dump valve 51.

The rear head of the tank 12 is provided with two annular flanges 26 which are arranged concentric With the fire receive cylindrical flame housings 27 from which ,oil burners 28 tangentially project. The iiame 'housings 27 are lined with iireclay or similar heat resisting refractory material 29 and are provided with a ame channel 30. By this construction the llame projected from the burners 28 is caused to whirl in the ame channel 30 and .exhaust into the fire tubes 13 in a -rapidly whirllng, helical path. This causes the flame to cling closely to the walls of the tubes 13 so that a maximum heating eiect is obtained upon the surface of the tubes. A peep-hole 31 closed bymeans of flame housings desired.

Air is furnished to the burners 28 from a blower 33 driven from a suitable gas engine 34. The blower 33 and the engine 34 are supported upon a frame 35 carried on the rearward extremity of the chassis 10. The blower 33 exhausts into a horizontal air manifold 38, the extremities of which, communicate with the burners 28. Fuel oil is fed to the burners 37 controlled by means of burner valves 38. This fuel oil is obtained from a fuel oil pump 39 which 'in turn draws the oil from the tank 12 through a fuel oil feed pipe 40 .controlled by means of a valve 41.

The fuel oil pump 39 is preferably driven from the shaft, indicated at 42, of the blower 33 by belt 43. A circulating Dump 'of a suitable belt 45. The circulating pump 44 tank 12 through a control valve 46 and discharges from a discharge pipe 47 controlled by means of a pump discharge valve 48.v

'When it is desired to heat a relatively large volume of oil, a trailer tank 52 is employed carried upon a trailer chassis 53 which may be hitched to the truck chassis 10 by any suitable draw bar connection 54.. The trailer tank 52 is provided with a manhole 55 for cleaning purposes and with a lower circulating valve 56, an upper circulating valve 57 and a dump valve 58. l

' Operation v I of -thje device for simple heating 12 can probably be readily understood from the foregoing. Briefly, the burners '28 ,The operation Lasa-ivi tubes 13. The flanges 26.

ybe used for circulating vhot oil 28 through fuel oil pipes are ignited and the blower 33 projects a helical blast of flame in the nre tubes 13 which quickly heats the entire volume of oil in the tank.

If a larger volume of oil 'is required to be heated. the discharge pipe 47 is connected'to the upper circulating valve 57 of the trailer tank by means of a flexible metal hose 59 and the lower valve 50 of the tank is connected by means of a similar metaliichose 60 to the lower circulating valve 56 of the tank. Hot oil will be circulated by the circulating pump 44 .from the tank 12 through the'trailer tank 52 and back until the oil in the trailer tank reaches the oil in the tank 12.

If it is desiredto dump the oil into an. oil well or pipe line the two dump valves 51 and 58 are same temperature as the connected together so that the. entire volume of4 oil can be discharged at once. Should the device in a well the vdump valve 51 is connected so as to discharge into the well and the valve 49 is connected to the discharge of the well pump so that hot oil can be allowed to ilow into the well and cool oil pumped out into the tank 12-to replace it.

Should the device be required to pump hot oil into a pipe line or tank it can be connected to the desired apparatus by means of the pump discharge 47.

Should the device be used inconnection with a portable still or renery the vapor outletvalve 21 can be connected direct to the still so as to condense the vapors arising from the oil when the desired temperatures are reached. The temperatures can bewatched by means of the thermomf eter tube 25 and controlled by means of the burner valves 38.

While a specific form of the improvement has been described and illustrated herein, it is desired to be understood that ythe same may be varied, within the scope of thc appended claim, without departing from the spirit of the invention.

Having thus descritdl the invention. what is claimed and desired secured by Letters Patent 18: w

A device for heating fluids comprising: a tank; a heating tube extending within said tank adiacent the bottom thereof; said tube opening through one end of said tank; a stack' arising from the other extremity of said tube and passing to the exterior o f said tank; a. burner adapted to project a flame within s id tube, said tube terminating in spaced relan to 'the other end of said tank; bracket pla extending upwardly from the bottom of said tank; and slide rings carried by said bracket plates and adapted to slidably 'support said fire tubes so as to allow longitudinal expansion of said tube.

HENRY W. HILDEBRAND, JR.

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